• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

computer won't power on

M

Maezr

Senior member
I left my computer on overnight, when I came back, it was sort of.. frozen. control alt delete/etc wouldn't do anything, so I pulled the power on it.

plugged it back in, tried to turn it on. nothing happened.

when I plug it in, a single yellow light on the motherboard lights up, but it doesn't respond at all when I hit the "turn on" button

the heatsink fan doesn't even start up

I checked all of the connections and nothing seems to be lose or anything

is the motherboard likely completely dead? is there anything I should try?
 
I don't have the manual, I'll go look it up though..

KR7A-RAID motherboat, Athlon XP 1700+, 512 megs DDR 2100
 
Do you see any other fans that have power. Power suppy fan?, Case fans?, anything else that powers up? Maybe your cpu fan stopped working and possibly overheated causing damage to cpu. That could cause your computer to lock up.
 
no, absolutely the only thing that has power that I can tell is the one light on the motherboard

I looked at the manual but couldn't find anything about the lights?
 
If the fan on your power supply isn't on, it because either the power supply is not working properly and you would need a new one, or the switch on your case is bad, or the motherboard is not operating correcting due to the fact that it tells the power supply to supply power to the cpu and other components via the case switch. Make sure the case power switch connector is properly connected to the motherboard.
 
If your handy with a multimeter you could try reading the voltages from the 20 pin molex power connector. Most motherboard manuals will give you a diagram of the power connector with the appropiate voltages used for each pin which is the same for all atx power supplies.
 
the multimeter bit sound a bit over my head. I'm pretty sure everything is connected fine- I checked a few times.

it could be the powersouce even though that yellow light on the motherboard is powered?

is there any easy way I could determine if the problem is the motherboard, the case, or the psu?
 
Originally posted by: Maezr
the multimeter bit sound a bit over my head.
Click to expand...
then you will be
I'm pretty sure everything is connected fine- I checked a few times.

it could be the powersouce even though that yellow light on the motherboard is powered?

is there any easy way I could determine if the problem is the motherboard, the case, or the psu?
Click to expand...
doing the oldstyle swapping parts routine to test the components for function..gl 🙁


I'm leaning towards either cpu died (most likely) or frt pnl connector(s) troubles..
 
if the cpu died, then the other things should still be powering on- the case fans, the ps fan, etc, right?

that's not the case, though.
 
You need to look for source of the problem. The power supply fan isn't working. The power supply provides power to its own fan and the rest of the system. Obviously the power supply isn't doing its job by giving power to the fans. Reasons... Of course the power supply may not be function correctly. Just because the power supply can provide power to a led on your motherboard doesn't positively mean its working. There are many voltages the power supply provides for different components. Common voltages are +3.3v, +/-5v, +/-12v. The motherboard is a possible reason too in that the motherboard (the user pressing the power button) has to tell the power supply to deliver power to the system. Think of this as a control signal to the power supply to power on. This is the same principle when ask windows to shut down your computer. Windows sends a message to the motherboard to send a control signal to the power supply to power off. Also if the power button or anything wiring for it is bad or connected wrong it you get the same effect. So I don't want to just come out and say your power supply is bad when there could be other possibilities. The only way to effectively check this is either learn how to use a multimeter, or switch out your power supply(which is much easier than trying a different motherboard.
 
You must log in or register to reply here.

TRENDING THREADS

Back
Top